Safety arrangement for charging devices of hoist cages



L. THALLMAYERZ SAFETY ARRANGEMENT FORYCHARGING DEVICES 0F HOIST CAGES.APPLICATION FILED MAYIL'IBZI.

L435,56,- v Patented Nov. M, 1922,,

Patented Nov. 14, 1922..

LUDNIG THALLMAYER, OF BEHLIN-CHARLOTTENBURG, GERMANY, ASSIGNOB TOSIEMENS-SCHUCKERTWERKE GESELLSCHAFT MIT BESCHRANKTER HAFTUNG, FSIEMENSSTADT, NEAR BERLIN, GERMANY, A CORPORATION OF GERMANY.

SAFETY ARRANGEMENT FOR CHARGING DEVICES OF I-IOIST CAGES.

Application filed May 17, 1921. Serial No. 470,460.

To all whom it may concern:

Be it known that I, LUDWIG THALLMAYER, citizen of the Austrian Empireresiding at Berlin-Charlottenburg, Germany, have in vented certain newand useful Improvements in Safety Arrangements for Charging Devices ofHoist Cages, of which the following is a specification.

' My invention refers to hoisting devices and more especially to thecharging devices used in connection therewith.

l/Vith charging devices for hoist-cages which are electrically orpneumatically operated there is a danger that the starting of thedriving arrangement in the direction of the charging motion takes placebefore the hoist-cage is in such a position as to safely receive thetrucks.

According to the present invention this danger is eliminated by thecharging device being blocked for the forward movement of the trucks.

In the drawings affixed to this specification and forming part thereofan arrangement embodying my invention is illustrated diagrammatlcally byway of example Beferring to the drawings 1 is the pushing gear for thetrucks which are carried along by the band 2 running over two pulleys 3and 4. The pulley 4 is placed on a common shaft with the gear wheel 5.The gear wheel 5 is rotated by means of a worm 6. The worm 6 is mountedon the shaft of the motor 7 which is supplied with current from themains 8. For the return motion of the pushing gear 1 the motor receivescurrent whenever the line 8 is connected to the motor through theconductor 9 and the regulating apparatus 10. This is effected by movingthe lever 11 of the regulating apparatus 10 over to the right. For theforward movement of the pushing device 1 the motor 7 receives currentfrom the mains 8 through the regulating apparatus 10 and the conductor18 connected thereto. This is the case whenever the conductor 18 isconnected to the mains through the switch 12-, and when lever 11 ismoved over to the left. The switch 12 is opera-ted by means of thehoist-cage indicated at 13, this cage being provided with a projection14:. During the upward movement this projection l t strikes aroller-lever 16 which is connected to the switch 12 by means of the rods17. Thereby the roller-lever 16 is carried along from position I intoposition II, shown in dotted lines.

I claim:

1. In a device of the kind described in combination a hoist cage, meansfor pushing a truck onto said cage and means for blocking said pushingmeans so long as said cage is not in its correct position relatively tosaid pushing means.

2. In a device of the kind described in combination a hoist cage, meansfor pushing a truck onto said cage and electric means for blocking saidpushing means so long as said cage is not in its correct positionrelatively to said pushing means.

In testimony whereof I aflix my signature.

LUDWIGr THALLMAYEB.

